US1256368A

US1256368A - Concentration of titanium ores.

Info

Publication number: US1256368A
Application number: US17896917A
Authority: US
Inventors: Maurice Roger Raffin
Original assignee: P Raffin & Fils Soc
Current assignee: P Raffin & Fils Ste; P Raffin & Fils Soc
Priority date: 1917-07-06
Filing date: 1917-07-06
Publication date: 1918-02-12
Anticipated expiration: 1935-02-12

Description

" 5 ED STATES PATENT @EEKCE.

MAURICE ROGER BAIFIN, OF DUNKIRK, FRANCE, ASSIGNOB TO SOCIETE P. RAFIIN &

FILS, OI DUNKIRK, FRANCE, A CORPORATION DIE-FRANCE.

CONCENTRATION OF TITANIUM ORES.

No Drawing.

To all whom it may concern:

Be it known that I, MAURICE Room RAFFIN, a citizen of the Republic of France, and a resident of 16 Rue Carnot, Dunkirk, France, have invented certain new and useful Improvements in Concentration of Titanium Ores, of which the followmg 1s a spec1- fication.

This invention relates to a process of treating ilmenites or titanic iron ores for the purpose of concentrating them to a hlgh proportion of titanic oxid (T10 It is known -that these ores are titanates of iron, comcrucibles which are slowly heated to a temperature close to 1000 C., that is to say to a comparativel low. temperature. Above 1100 C. there ta es place the phenomenon of re-oxidation of iron, and the result becomes negative. When a mixture of ilmenite and carbon reaches reduction tem erature, carbonic oxid is abundantly reed, causes a violent ebullit-ion and carries the arbon out of the crucible, so that the result becomes negative. But the addition of an agglutinant, such as oil or tar, has the effect oi impeding the ebullition, formlng with the ilmenite and carbon a porous mass which remains friable to such extent that it may be reduced to powder form by pressure of the fingers. Oil or tar is chosen by preference because only a very small quantity is needed to permeate and ag lutinate the mixture of ore and carbon, and because in addition to its physical action just-explained, these substances resent the further advantage of ierformmg a chemical role by leaving a caronaceous residue (carbone de pyrogenation) which incases the grains of ilmenite and contributes to the reduction of the iron oxid. After cooling, the contents of the receptacles are thrown into vats containing very diluted sulfuric acid. The product of the reaction is a titaniferous residue conipeoiflcation of Letters iatent.

'- Application filed July 6, 1917. Serial No. 178,969.

Patented Feb. 1.2, 1918.

taining very little iron. It is washed, then dried or calcined. The sulfate of ironobtamed as a bf -product is collected by crystallization. stead of sulfuric acid, hydrochloric acid could also be used.

What I claim as my invention and desire to secure by Letters Patent is 1. A process for the treatment of ilmenites or titanic iron ores for concentrating to a high content of titanic oxid (TiO said process consisting in mixingilmenite with pulverized carbon, adding an agglutinant to this mixture, heatlng the same, treating with a dilute acid capable of reacting on the iron, Washing and then drying or calcining the titaniferous residue thus obtained.

2. A process for the treatment of ilmenites or titanic iron ores for concentrating to a high content of titanic oxid (TiO said process consisting in mixing ilmenite with pulverized carbon, adding an agglutinant to this mixture, heatin the same to a temperature between 900 to 1100 C., treating with a dilute acid capable of reacting on the iron, washing and then drying or calcining the titaniferous residue thus obtained.

3. A process for the treatment of ilmenites or titanic iron ores for concentrating to a high content of titanic oxid (TiO said process consisting in depriving ilmenite of silica and other impurities by magnetic separation, mixin the purified ilmenite with pulverized car on, adding an agglutinant to this mixture, heating the same, treating with a dilute acid capable of reacting on the iron, Washing and then drying or calcining the titaniferous residue thus obtained.

4. A process for the treatment of ilmenites or titanic iron ores for concentrating to a high content of titanic oxid (TiO said process consisting in mixing ilmenite with pulverized charcoal, adding to this mixture a carbonaceous agglutinant, heating in a crucible to a temperature between 900 C. and 1100 C., subjecting the reaction product to the action of dilute sulfuric acid, washing and then drying or calcining the titaniferous. residue thus obtained.

5. A process for the treatment of ilmenites or titanic iron ores for concentrating to a high content of titanic oxid (TiO said process consisting in mixing ilmenite with pulverized charcoal, adding tar to this mixture, heating in a crucible to a temperature reaction product to the action of dilute sulfuric acid, washing and; then drying or celcining the'titaniferous residue thus obtained.-

' 6. In a process for concentrating titanic 1ron\ores to a high content of tltanlc oxid (TiOQLwherem the ore is mixed with carbon I in pulverulent form and brought to reaction temperature, the novel step of combining an agglutinant with the'mixture to restrein the ebullience occurring during the reaction.v

"7. In a, process for concentrating titanic iron ores to a high content of titanic oxioi (-TiO wherein the ore is mixed with carbon rgesnsee 'the reaction and to further the reduction of the iron oxid.

In, testimony whereof I have signed my 0 4 name to this specification, in the presence of two subscribing witnesses.

'URIGE ROGER RAFFIN. Witnesses: CH. Domr,

M. Dnrn'vmmom'.